On the topic of feature requests, here's some I have in mind:
- parent/child relationship between book and review post types
- customizable fields for book and review post types - checklists, radio buttons, conditional etc.
- be able add books or reviews from the front end (form plugin compatibility) without the need of going through the dashboard
- integration with Open Library plugin to search and create book posts automatically using data from Open Library (or other book database system)
- support comments to reviews
- support helpful/not helpful review ratings and review display sorting
- custom and automated taxonomies based on book meta data (title, author, ISBN etc.)
Of the several book review plugins available on WP, none of them offer these features. And as this plugin is quite new, I think this is the right, and this would be the right plugin to have these features implemented if possible.
Good luck and thanks